Karen Shin, MD
Obstetrics & Gynecology Physician · Los Altos, CA
Karen Shin, MD is an obstetrics & gynecology physician with a practice address in Los Altos, California, and NPI 1598858623, issued on Oct 2, 2006. Check the license (California A75669, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Karen Shin
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- A75669 CA
Self-reported in NPPES; status is on the state search - Practice location
- 370 Distel Cir, Los Altos, CA 94022
- Phone
- (650) 254-5200
- Enumerated
- Oct 2, 2006
- Record last updated
- Feb 3, 2022
- Medicare enrollment
- Enrolled (PECOS I20080822000710); accepts Medicare assignment
- Medical or professional school
- University Of California, Irvine, California College Of Medicine, 1999
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 370 Distel Cir
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Karen Shin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A75669Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
52% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
79 Medicare Part D claims for 24 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 28% of claims.
Most prescribed
- Estradiol22 claims
- Estradiol (Once Weekly)19 claims
- Progesterone12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $249.66
2 payments; by number, the most common kind was food and beverage; the largest payer was Mayne Pharma Commercial LLC. The 21,429 providers of this specialty with any payment received $1,030.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Sutter Bay Medical FoundationLos Altos, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karen Shin among 5,088 obstetrics & gynecology physician records in California
Karen Shin, MD is one of 5,088 obstetrics & gynecology physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 52% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated1999 · median 2004 among the 2,700 with a school on file
- Record last updated2022 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in California
There are 5,088 obstetrics & gynecology physician records in California.
All 5,088 in California → Every provider in Los Altos → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Abbie Hageman, MDLos Altos, CA 940221053872192
- Laurie Karl, M.D.Los Altos, CA 940221720147184
- Hardat Sukhdeo, MDLos Altos, CA 940221740373885
- Ashley TaggartLos Altos, CA 940221962865006
- Kirstin Woo, MDLos Altos, CA 940221023144672
- Aroti Achari, M.D.Menlo Park, CA 940251144458951
- Kamilee Christenson, MDMenlo Park, CA 940251851652242
- Jennifer Conti, M.D., M.S.Menlo Park, CA 940251457632739
Common questions
What is Karen Shin, MD's NPI number?
Karen Shin, MD's National Provider Identifier (NPI) is 1598858623, issued on Oct 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Karen Shin, MD located?
The NPPES record lists a practice address at 370 Distel Cir, Los Altos, CA, 94022. Phone: (650) 254-5200. Providers update this record themselves, so call before visiting.
How can I verify Karen Shin, MD's license?
NPPES lists California license number A75669, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Karen Shin, MD prescribe under Medicare Part D?
In 2024, Karen Shin, MD had 79 Medicare Part D claims for 24 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.